Gastrointestinal bleeding refers to any form of bleeding that occurs in the digestive tract, which includes the esophagus, stomach, small intestine, large intestine, and rectum. This condition can be caused by various factors, such as ulcers, inflammatory bowel disease, or diverticulosis. Symptoms may include vomiting blood, black or tarry stools, and abdominal pain. Diagnosis typically involves medical history, physical examinations, and tests like endoscopy or colonoscopy. Treatment depends on the cause and severity of the bleeding, ranging from medication to surgical interventions. Early detection and management are crucial to prevent complications.